Doorknob



Aug- 10, 1943- J. HILLGREN 2,326,646

DOOR KNOB Filed June 29, 1940 Snvcntor JHM/F5 H/ZL GEEN.

Patented Aug. 1o, 1943' ,smet-f assesses n l @'fDooaKNon Y James' Hiligren5-lHuntington Park,`Calii. f spplie'ationfsunegae, 1940, serial No; 343,192

4 Claims.

ticularly to door knobs fabricated from sheet metal.

One of thek principal objects ofthis invention isv to provide ya door knob of this class.4

in which the principal portions are lformed from sheet metal, and in which the same are rigidly but economically secured relative to eachfother.

Another important object of .this invention vis to provide a ferrule having a soft cast metal core around which is formed the knob member, the knob member ybeing rigidly secured to. the ferrule by the core. l

Another vimportant object of this invention is to provide a knob of this class in vWhich the knob memberis formed around a shank in such a manner that it is fixed against axial movement or loosening relative to the shank.

(el, Zea-434W 'Ihis invention relates to door knobs, and parto a larger diameter at Ib; The extremefouter end of the flared portion is substantially cylindrical, as indicated byv I C'. VThe core 2`is molded" or cast Within the ferrule, but the outer portion 2a, which is a'torus-shaped ring or shell, is'of 'i considerably largerdiameter and extends axial-4 ,i ly beyond the ferrule. This larger diameter ring'or shell Yis molded around or encloses the outer end of the ferrule, as shown in bothligs.A Y

1and3."f` Y. a The knob member 3 is formed substantially as an oblate spheroid, the peripheral portion being Y located around the enlarged diameter portion 2a.

The inner end of the knob memberris formed around and engages the ferrule andcore 2at theV juncture of the two latter members.A The axially outer vedge 2b ofthe core' engages the f inner Wall. of the knob member near its periph- A further important object of this inventionis ,to provide a door knob of this glass in which the knob member may be made vof relatively thin gauge sheet metal, but which is prevented from inward collapse by a bracing construction of the core. Y

With these and other objects in view, aswill appeal` hereinafter, I have devised a door` knob having certain novel featuresof construction, combination, and arrangement of parts and vportions as will be hereinafter described in detail and particularly set forth in the reference being had to ther accompanying drawappended claims,

ing and to the characters of reference thereon which form a part of this application, in which:

'Fig 1 is a longitudinal elevation of one form of my door knob, with the upper portion thereof broken away and inv sectionA to facilitate the illustration; y

Fig. 2 is a partial end and partial sectional View' thereof taken substantially through 2- 2 of'Fig. l; and,

Fig. 3 is a view similar to that of Fig. 1 but vshowing a .slightly modied form oi construction.

My door knob, as shown in the drawing, conshank of the knob, the inner end la being slight-k i ly contraeted,and the outer end being flared- 55 eral portion. Thus, Whenfpressed into place, the

knob member is rigid With respect to the ferrulef and core, andris not permittedto' be floosene'd' readily.v Around the outer surfaceoffthe en' largedY portion' of the core are a plurality of lon-v gitudinal' ribs 2c, which facilitate the location of. the'knob member around the core, and permit i the ribs readily tobe deformed-to insure' properj. j v seating of theknob member around the core;

These ribs or ridges 2, when tightly embracedy 3, tend to'bite into.` or disl` least sointimately engage f the latter-'that the slightest relative movementv by the knob member tort the latter, Vor at.

of the core and knob member isreduced to a minimum. y f j VIn the modified structure shown in Fig.`3, the

central portion of thecoreis provided with a slightly different recess forthe reception of a knob spindle, diiferent 1, nwhich the core'is central recess.

from that shown in Fig. provided with But the principal. diiferenceiis that the core 4 in Fig. 3 is provided with anaXial at its outer end.A AThis elongation engages the inner 'side 'of the ycentral portion of. l the knob member 'so as Vto -prevent ready coll of the outer end of thej elongation Ila lapse or deformation knob member.

YThough I have shown and described apartic# construction, combination, and arrangement ular of parts and portions anda modification thereof, I do not Wish to be limited to the same,'but desire to include in thescope of my invention the construction, combination, and arrangement sub- I claim:

stantially as setrforth in theappended claims.

1; In a door knob,A aferrule having a iiaredy outer end, a core 'memberanchoredfwithin theY a threaded ferrule and having its outer end flared beyond the flared end of the ferrule and extending axially outwardly therefrom, the flaredend of the ferrule being anchored within the flared outer end of the core member and a knob member pressed around the outer flared portion of the core member and with its inner edge in engagement with the outer side of the flared portion l of the ferrule.

2. Ina door knob, a ferrule,l a Y,core member anchoredwithin the ferrule, said core member being flared at its outer end and having an outwardly extending axial portion, and a knob mem.-

ber having its .peripheral portion pressed over the flared end of the core member, the axial portion of the core member engaging thecehtral portion of the inside of the outer end wall of the knob member.

3. In a door knob, a ferrule having at itrslouter end an outwardly diverging flange, a core member anchored withiny the ferrule and having its outer end flared diametrically and axially beyond the outer end of the ferrule with the outer portion of the flange anchored within the flared 4portion of the core member, and a knob member pressed around the flared portion of the core member and with its inner edge in engagement with the exterior portion of the flange.

4. In a door knob, a shank having a flared outer end and also having an outwardly extended axial portion, and a knob member at the outer end of the shank, said member being pressed around lthe outside fof and in engagement with wall 'of` the knob member.

the' flared outer end portion, the outer end of the axial portion of the shank engaging the centralportion of the inner side of the outer end JAMES HIL'LGREN. 

